Hydraulic antivibratory sleeves

Details Hydraulic antivibratory sleeves Hydraulic antivibratory sleeves

1990-07-27

1992-02-18

Graham, Matthew C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, B60K 513, F16F 1300

Patent

active

050887025

ABSTRACT:
A hydraulic antivibratory sleeve is disclosed comprising two rigid tubular frames (1, 2), one surrounding the other, and joined together by an elastomer body (3) shaped so as to form therewith at least two diametrically opposite sealed pockets (A, B) communicating together through a narrow channel, the assembly of the pockets and said channel being filled with a damping liquid, the portion of the elastomer body which defines the first pocket (A) having in axial section the general form of a radially outwardly open U or V, the narrow channel being formed of at least two narrow channels (9) each extending, at least approximately and at least partially, along a transverse arc of a circle having as axis the axis of the external tubular frame (2), each arc being situated close to this frame and close to an axial end of said frame. The first pocket (A) is divided into two independent compartments (A.sub.1, A.sub.2) into which the two narrow channels (9) open respectively assigned respectively to the damping of different oscillation frequencies.

REFERENCES:
patent: 4458888 (1984-07-01), Wolf et al.
patent: 4728086 (1988-03-01), Ishiyama et al.
patent: 4884789 (1989-12-01), Takeda et al.
patent: 4962915 (1990-10-01), Thorn

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